The Delteq Opti-Direct system solves most of the LT1's Opti-Spark problems by converting to a
distributorless system similar to that used on the Cadillac Northstar
engines. With high voltage removed from the Opti-Spark, the problems of
cap & rotor wear, internal arc-over and cross-firing vanish. The
rotor can be removed, preventing the problem of high RPM rotor failure,
seen on many race applications.
The distributorless system consists of four high-output ignition coils,
each firing two spark plugs. The four-coil system is able to produce longer
charging time than a single coil system, even at high engine speeds, which
means more energy to the plugs when it's needed most. The system is
well-proven in its Northstar application with a stock redline of
6500 RPM and a recommended tune-up interval of 100,000 miles!
The Opti-Direct system is easy to install. Every kit is 100% plug &
play, so no cutting, splicing or fabrication is required.
Each application is custom-designed for a specific vehicle, so it's a
perfect fit every time.
Included with the Opti-Direct system are:
Delteq Opti-Box (the "brain")
Plug & play wiring harnesses
New Delphi ignition module with 4 coils (the "coilpack")
Application-specific brackets
Custom 8mm double-silicone spark plug wires
Labels for coils and spark plug wires to aid proper connection
All stainless steel fasteners (No rust!)
Detailed instruction manual
Experienced "driveway mechanics"
should be able to install the basic system in an hour, plus the time
required to run the new plug wires.
Opti-Direct Requirements
The Opti-Direct (and every LT1 ignition system) uses the Opti-Spark sensors to determine
crankshaft position and calculate the spark timing. Therefore, any Opti-Spark-related trouble codes
must be resolved before installing the Opti-Direct. Unfortunately, this
sometimes requires Opti-Spark replacement at additional cost. On
the good side, Opti's seem to last longer without all that high voltage
running through them.
Delteq offers a one-year limited warranty on ALL parts of the Opti-Direct Ignition
System. The Opti-Direct Ignition System has been submitted for CARB
approval.
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